package questionSolution.Question_70;

public class Solution_1 {
    public int climbStairs(int n) {
        int[] dp = new int[n+1];
        int res;
        dp[0] = 1;
        dp[1] = 1;
        for( int i = 2; i <= n; i++){
            dp[i] = dp[i - 1] + dp[i - 2];
        }
        res = dp[n];
        return res;
    }

    static void main() {
        Solution_1 sol = new Solution_1();
        int n = 5;
        int res = sol.climbStairs(n);
        System.out.println(res);
    }
}
